This is Robert Koga's third instructional book.
This is a Primer for Law Enforcement by Robert Koga and William Pelkey.
This manual's main focus is using the kubotan to place a suspect under arrest. It focuses on many different joint locks using the kubotan to subdue a "perp".
In 1955, Koga became one of the first Asian-Americans to be sworn in as a Los Angeles Police Department officer. He became a self-defense instructor for the LAPD, during which time he started the nonprofit Koga Institute to teach his techniques in 1973.